Cursor (slide rule)
Slipstick
Cursor (slide rules)
Slide rule
Slide rule
-1
Section::::Works.:Books.:"Circles of Proportion and the Horizontal Instrument".

William Oughtred
475249
Slide ruler
Slide rules
Slide rules
-1
Section::::Works.:Books.:"Circles of Proportion and the Horizontal Instrument".

William Oughtred
475249
Slipsticks
Addition Slide Rule
Slide Rule
Slide-rule
Circular calculator
Circular slide rule
Sliderule
slide ruler
circular calculator
cursor slide rule
slipstick
slide rules
sliderule
circular slide rule
slide rule
slipsticks
cursor slide rules
addition slide rule